Lifting cylinder



FIG. 1 is a front view of a lifting cylinder, showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines shown in the figures are for the purpose of illustrating portions of the lifting cylinder and form no part of the claimed design. 

CLAIM We claim the ornamental design for a lifting cylinder, as shown. 